Directional crystal structure characteristics of Ni60/high-aluminum bronze composite coating

doi:10.11990/jheu.201706099

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	Directional crystal structure characteristics of Ni60/high-aluminum bronze composite coating
	Yang, Xiaotian 1,2; Duan, Junling 1; Fu, Xiaoyue 1; Gong, Lu 1; Li, Wensheng 1,2
刊名	Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University
	2018-12-05
卷号	39 期号:12 页码:2068-2074
关键词	Aluminum alloys Aluminum coatings Bronze Composite coatings Cooling Hardness Microstructure Nickel Plasma spraying Powder coatings Remelting Aluminum bronze alloy Element distribution Forced cooling High frequency induction Metallurgical bonding Ni60 alloy powders Structure characteristic Supersonic plasma spraying
ISSN号	10067043
DOI	10.11990/jheu.201706099
英文摘要	To improve the performance of Ni60 single alloy coatings and make it suitable for severe working conditions, high-aluminum bronze alloy was added to the Ni60 alloy powder. Directional composite coatings of Ni60 and 5% high-aluminum bronze were prepared by high-frequency induction remelting and forced cooling and supersonic plasma spraying. The microstructure, element distribution, phase transformation, and effects of directional structure on coating hardness were studied. The results show that after the high-frequency induction remelting and forced cooling, the laminar structure of the prefabricated coating was transformed to a dense directional structure of epitaxial growth. The bonding type between the substrate and the coating turned from mechanical bonding of prefabricated coatings to metallurgical bonding of directional structured coatings. The main branch of the directional structure was mainly composed of compounds and solid solutions of Ni and Fe, surrounded by precipitated phases of Cr, C, and B. The Al and Cu of high-aluminum bronze reacted with Ni during formation of the directional structure and formed net structure compounds distributed between the main branch and the precipitated phases, bridging the main branch and the precipitated phases. Because of the unidirectional characteristic of the directional structured coating, its surface hardness decreased compared with the prefabricated coatings, but the holistic homogeneity was better. © 2018, Editorial Department of Journal of HEU. All right reserved.
语种	中文
出版者	Editorial Board of Journal of Harbin Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114134]
专题	学报编辑部材料科学与工程学院
作者单位	1.College of Materials and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Yang, Xiaotian,Duan, Junling,Fu, Xiaoyue,et al. Directional crystal structure characteristics of Ni60/high-aluminum bronze composite coating[J]. Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University,2018,39(12):2068-2074.
APA	Yang, Xiaotian,Duan, Junling,Fu, Xiaoyue,Gong, Lu,&Li, Wensheng.(2018).Directional crystal structure characteristics of Ni60/high-aluminum bronze composite coating.Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University,39(12),2068-2074.
MLA	Yang, Xiaotian,et al."Directional crystal structure characteristics of Ni60/high-aluminum bronze composite coating".Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University 39.12(2018):2068-2074.